Answer : 3. "Coal Field"
Explanation :

Recently, Union Minister Shri Pralhad Joshi launched C-CARES web portal for Coal Mines Provident Fund Organization (CMPFO). Developed by C-DAC, it aims to digitize records and streamline processes for 3.3 lakh provident fund subscribers and 6.1 lakh pensioners in the coal sector. The portal enables online settlement of claims, ensuring transparency, faster processing and better records management. In line with the vision of Digital India, this marks a significant leap towards efficient and transparent operations in the coal sector.